ASTROSAT CZTI

Data Quality Report

Orbit 38269

Creation date: 2024-06-27T21:50:33.421261
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_145T01_9000005370_38269cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38269cztM0_level2_quad_clean.evt
Size (bytes)393,408,00092,672,640
Size375.2 MB 88.4 MB
Events in quadrant A2,813,432632,253
Events in quadrant B2,549,650643,652
Events in quadrant C2,671,799607,120
Events in quadrant D6,102,318539,734

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117383
B0113272
C0113222
D0220642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5475130.237443%
B5475370.675799%
C5475200.365297%
D54753356.118721%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7148 5476 2 2 0.03% 0.04%
B 7148 5476 18 18 0.25% 0.33%
C 7148 5476 13 13 0.18% 0.24%
D 7148 5476 325 325 4.55% 5.93%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 404882 3280.58 609 597 123.2
A 12 189 31242 248.67 609 597 123.2
A 13 6 10601 81.18 609 597 123.2
B 15 85 79215 670.55 606 590 117.3
B 5 172 48146 405.58 606 590 117.3
B 12 111 14129 115.47 606 590 117.3
C 15 214 229437 1651.9 595 598 138.5
C 12 249 47383 337.72 595 598 138.5
C 0 10 45279 322.54 595 598 138.5
D 10 203 2689575 18842.23 583 567 142.7
D 13 249 384023 2686.93 583 567 142.7
D 1 52 193415 1351.31 583 567 142.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter